| 1 | /* |
| 2 | * Macintosh OpenTransport networking abstraction |
| 3 | */ |
| 4 | |
| 5 | #if TARGET_API_MAC_CARBON |
| 6 | #define OTCARBONAPPLICATION 1 |
| 7 | #endif |
| 8 | |
| 9 | #include <OpenTransport.h> |
| 10 | #include <OpenTptInternet.h> |
| 11 | |
| 12 | #include <string.h> |
| 13 | |
| 14 | #define DEFINE_PLUG_METHOD_MACROS |
| 15 | #include "putty.h" |
| 16 | #include "network.h" |
| 17 | #include "mac.h" |
| 18 | |
| 19 | struct Socket_tag { |
| 20 | struct socket_function_table *fn; |
| 21 | /* other stuff... */ |
| 22 | OSStatus error; |
| 23 | EndpointRef ep; |
| 24 | Plug plug; |
| 25 | void *private_ptr; |
| 26 | bufchain output_data; |
| 27 | int connected; |
| 28 | int writable; |
| 29 | int frozen; /* this causes readability notifications to be ignored */ |
| 30 | int frozen_readable; /* this means we missed at least one readability |
| 31 | * notification while we were frozen */ |
| 32 | int localhost_only; /* for listening sockets */ |
| 33 | char oobdata[1]; |
| 34 | int sending_oob; |
| 35 | int oobpending; /* is there OOB data available to read?*/ |
| 36 | int oobinline; |
| 37 | int pending_error; /* in case send() returns error */ |
| 38 | int listener; |
| 39 | struct Socket_tag *next; |
| 40 | struct Socket_tag **prev; |
| 41 | }; |
| 42 | |
| 43 | typedef struct Socket_tag *Actual_Socket; |
| 44 | |
| 45 | struct SockAddr_tag { |
| 46 | int resolved; |
| 47 | OSStatus error; |
| 48 | InetHostInfo hostinfo; |
| 49 | char hostname[512]; |
| 50 | }; |
| 51 | |
| 52 | /* Globals */ |
| 53 | |
| 54 | static struct { |
| 55 | Actual_Socket socklist; |
| 56 | InetSvcRef inetsvc; |
| 57 | } ot; |
| 58 | |
| 59 | OSErr ot_init(void) |
| 60 | { |
| 61 | OSStatus err; |
| 62 | |
| 63 | err = InitOpenTransport(); |
| 64 | if (err != kOTNoError) return err; |
| 65 | ot.inetsvc = OTOpenInternetServices(kDefaultInternetServicesPath, 0, &err); |
| 66 | return err; |
| 67 | } |
| 68 | |
| 69 | void ot_cleanup(void) |
| 70 | { |
| 71 | Actual_Socket s; |
| 72 | |
| 73 | for (s = ot.socklist; s !=NULL; s = s->next) { |
| 74 | OTUnbind(s->ep); |
| 75 | OTCloseProvider(s->ep); |
| 76 | } |
| 77 | |
| 78 | CloseOpenTransport(); |
| 79 | } |
| 80 | |
| 81 | SockAddr ot_namelookup(char const *host, char **canonicalname) |
| 82 | { |
| 83 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
| 84 | char *realhost; |
| 85 | |
| 86 | /* Casting away const -- hope OTInetStringToAddress is sensible */ |
| 87 | ret->error = OTInetStringToAddress(ot.inetsvc, (char *)host, |
| 88 | &ret->hostinfo); |
| 89 | ret->resolved = TRUE; |
| 90 | |
| 91 | if (ret->error == kOTNoError) |
| 92 | realhost = ret->hostinfo.name; |
| 93 | else |
| 94 | realhost = ""; |
| 95 | *canonicalname = smalloc(1+strlen(realhost)); |
| 96 | strcpy(*canonicalname, realhost); |
| 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | SockAddr ot_nonamelookup(char const *host) |
| 101 | { |
| 102 | SockAddr ret = smalloc(sizeof(struct SockAddr_tag)); |
| 103 | |
| 104 | ret->resolved = FALSE; |
| 105 | ret->error = kOTNoError; |
| 106 | ret->hostname[0] = '\0'; |
| 107 | strncat(ret->hostname, host, lenof(ret->hostname) - 1); |
| 108 | return ret; |
| 109 | } |
| 110 | |
| 111 | void ot_getaddr(SockAddr addr, char *buf, int buflen) |
| 112 | { |
| 113 | char mybuf[16]; |
| 114 | |
| 115 | buf[0] = '\0'; |
| 116 | if (addr->resolved) { |
| 117 | /* XXX only return first address */ |
| 118 | OTInetHostToString(addr->hostinfo.addrs[0], mybuf); |
| 119 | strncat(buf, mybuf, buflen - 1); |
| 120 | } else |
| 121 | strncat(buf, addr->hostname, buflen - 1); |
| 122 | } |
| 123 | |
| 124 | /* I think "local" here really means "loopback" */ |
| 125 | |
| 126 | int ot_hostname_is_local(char *name) |
| 127 | { |
| 128 | |
| 129 | return !strcmp(name, "localhost"); |
| 130 | } |
| 131 | |
| 132 | int ot_address_is_local(SockAddr addr) |
| 133 | { |
| 134 | int i; |
| 135 | |
| 136 | if (addr->resolved) |
| 137 | for (i = 0; i < kMaxHostAddrs; i++) |
| 138 | if (addr->hostinfo.addrs[i] & 0xff000000 == 0x7f000000) |
| 139 | return TRUE; |
| 140 | return FALSE; |
| 141 | } |
| 142 | |
| 143 | int ot_addrtype(SockAddr addr) |
| 144 | { |
| 145 | |
| 146 | if (addr->resolved) |
| 147 | return ADDRTYPE_IPV4; |
| 148 | return ADDRTYPE_NAME; |
| 149 | } |
| 150 | |
| 151 | void ot_addrcopy(SockAddr addr, char *buf) |
| 152 | { |
| 153 | |
| 154 | /* XXX only return first address */ |
| 155 | memcpy(buf, &addr->hostinfo.addrs[0], 4); |
| 156 | } |
| 157 | |
| 158 | void ot_addr_free(SockAddr addr) |
| 159 | { |
| 160 | sfree(addr); |
| 161 | } |
| 162 | |
| 163 | |
| 164 | static Plug ot_tcp_plug(Socket sock, Plug p) |
| 165 | { |
| 166 | Actual_Socket s = (Actual_Socket) sock; |
| 167 | Plug ret = s->plug; |
| 168 | if (p) |
| 169 | s->plug = p; |
| 170 | return ret; |
| 171 | } |
| 172 | |
| 173 | static void ot_tcp_flush(Socket s) |
| 174 | { |
| 175 | /* |
| 176 | * We send data to the socket as soon as we can anyway, |
| 177 | * so we don't need to do anything here. :-) |
| 178 | */ |
| 179 | } |
| 180 | |
| 181 | static void ot_tcp_close(Socket s); |
| 182 | static int ot_tcp_write(Socket s, char const *data, int len); |
| 183 | static int ot_tcp_write_oob(Socket s, char const *data, int len); |
| 184 | static void ot_tcp_set_private_ptr(Socket s, void *ptr); |
| 185 | static void *ot_tcp_get_private_ptr(Socket s); |
| 186 | static void ot_tcp_set_frozen(Socket s, int is_frozen); |
| 187 | static char *ot_tcp_socket_error(Socket s); |
| 188 | static void ot_recv(Actual_Socket s); |
| 189 | void ot_poll(void); |
| 190 | |
| 191 | Socket ot_register(void *sock, Plug plug) |
| 192 | { |
| 193 | static struct socket_function_table fn_table = { |
| 194 | ot_tcp_plug, |
| 195 | ot_tcp_close, |
| 196 | ot_tcp_write, |
| 197 | ot_tcp_write_oob, |
| 198 | ot_tcp_flush, |
| 199 | ot_tcp_set_private_ptr, |
| 200 | ot_tcp_get_private_ptr, |
| 201 | ot_tcp_set_frozen, |
| 202 | ot_tcp_socket_error |
| 203 | }; |
| 204 | |
| 205 | Actual_Socket ret; |
| 206 | |
| 207 | ret = smalloc(sizeof(struct Socket_tag)); |
| 208 | ret->fn = &fn_table; |
| 209 | ret->error = kOTNoError; |
| 210 | ret->plug = plug; |
| 211 | bufchain_init(&ret->output_data); |
| 212 | ret->writable = 1; /* to start with */ |
| 213 | ret->sending_oob = 0; |
| 214 | ret->frozen = 1; |
| 215 | ret->frozen_readable = 0; |
| 216 | ret->localhost_only = 0; /* unused, but best init anyway */ |
| 217 | ret->pending_error = 0; |
| 218 | ret->oobpending = FALSE; |
| 219 | ret->listener = 0; |
| 220 | |
| 221 | ret->ep = (EndpointRef)sock; |
| 222 | |
| 223 | /* some sort of error checking */ |
| 224 | |
| 225 | ret->oobinline = 0; |
| 226 | |
| 227 | /* Add this to the list of all sockets */ |
| 228 | ret->next = ot.socklist; |
| 229 | ret->prev = &ot.socklist; |
| 230 | ot.socklist = ret; |
| 231 | |
| 232 | return (Socket) ret; |
| 233 | } |
| 234 | |
| 235 | Socket ot_new(SockAddr addr, int port, int privport, int oobinline, |
| 236 | int nodelay, Plug plug) |
| 237 | { |
| 238 | static struct socket_function_table fn_table = { |
| 239 | ot_tcp_plug, |
| 240 | ot_tcp_close, |
| 241 | ot_tcp_write, |
| 242 | ot_tcp_write_oob, |
| 243 | ot_tcp_flush, |
| 244 | ot_tcp_set_private_ptr, |
| 245 | ot_tcp_get_private_ptr, |
| 246 | ot_tcp_set_frozen, |
| 247 | ot_tcp_socket_error |
| 248 | }; |
| 249 | |
| 250 | Actual_Socket ret; |
| 251 | EndpointRef ep; |
| 252 | OSStatus err; |
| 253 | InetAddress dest; |
| 254 | TCall connectCall; |
| 255 | |
| 256 | ret = smalloc(sizeof(struct Socket_tag)); |
| 257 | ret->fn = &fn_table; |
| 258 | ret->error = kOTNoError; |
| 259 | ret->plug = plug; |
| 260 | bufchain_init(&ret->output_data); |
| 261 | ret->connected = 0; /* to start with */ |
| 262 | ret->writable = 0; /* to start with */ |
| 263 | ret->sending_oob = 0; |
| 264 | ret->frozen = 0; |
| 265 | ret->frozen_readable = 0; |
| 266 | ret->localhost_only = 0; /* unused, but best init anyway */ |
| 267 | ret->pending_error = 0; |
| 268 | ret->oobinline = oobinline; |
| 269 | ret->oobpending = FALSE; |
| 270 | ret->listener = 0; |
| 271 | |
| 272 | /* Open Endpoint, configure it for TCP over anything */ |
| 273 | |
| 274 | ep = OTOpenEndpoint(OTCreateConfiguration("tcp"), 0, NULL, &err); |
| 275 | |
| 276 | ret->ep = ep; |
| 277 | |
| 278 | if (err) { |
| 279 | ret->error = err; |
| 280 | return (Socket) ret; |
| 281 | } |
| 282 | |
| 283 | /* TODO: oobinline, nodelay */ |
| 284 | |
| 285 | /* |
| 286 | * Bind to local address. |
| 287 | */ |
| 288 | |
| 289 | /* FIXME: pay attention to privport */ |
| 290 | |
| 291 | err = OTBind(ep, NULL, NULL); /* OpenTransport always picks our address */ |
| 292 | |
| 293 | if (err) { |
| 294 | ret->error = err; |
| 295 | return (Socket) ret; |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * Connect to remote address. |
| 300 | */ |
| 301 | |
| 302 | /* XXX Try non-primary addresses */ |
| 303 | OTInitInetAddress(&dest, port, addr->hostinfo.addrs[0]); |
| 304 | |
| 305 | memset(&connectCall, 0, sizeof(TCall)); |
| 306 | connectCall.addr.buf = (UInt8 *) &dest; |
| 307 | connectCall.addr.len = sizeof(dest); |
| 308 | |
| 309 | err = OTConnect(ep, &connectCall, nil); |
| 310 | |
| 311 | if (err) { |
| 312 | ret->error = err; |
| 313 | return (Socket) ret; |
| 314 | } else { |
| 315 | ret->connected = 1; |
| 316 | ret->writable = 1; |
| 317 | } |
| 318 | |
| 319 | /* Add this to the list of all sockets */ |
| 320 | ret->next = ot.socklist; |
| 321 | ret->prev = &ot.socklist; |
| 322 | if (ret->next != NULL) |
| 323 | ret->next->prev = &ret->next; |
| 324 | ot.socklist = ret; |
| 325 | |
| 326 | return (Socket) ret; |
| 327 | } |
| 328 | |
| 329 | Socket ot_newlistener(char *foobar, int port, Plug plug, int local_host_only) |
| 330 | { |
| 331 | Actual_Socket s; |
| 332 | |
| 333 | return (Socket) s; |
| 334 | } |
| 335 | |
| 336 | static void ot_tcp_close(Socket sock) |
| 337 | { |
| 338 | Actual_Socket s = (Actual_Socket) sock; |
| 339 | |
| 340 | OTCloseProvider(s->ep); |
| 341 | |
| 342 | /* Unhitch from list of sockets */ |
| 343 | *s->prev = s->next; |
| 344 | if (s->next != NULL) |
| 345 | s->next->prev = s->prev; |
| 346 | |
| 347 | sfree(s); |
| 348 | } |
| 349 | |
| 350 | static void try_send(Actual_Socket s) |
| 351 | { |
| 352 | while (bufchain_size(&s->output_data) > 0) { |
| 353 | int nsent; |
| 354 | void *data; |
| 355 | int len; |
| 356 | |
| 357 | /* Don't care about oob right now */ |
| 358 | |
| 359 | bufchain_prefix(&s->output_data, &data, &len); |
| 360 | |
| 361 | nsent = OTSnd(s->ep, data, len, 0); |
| 362 | noise_ultralight(nsent); |
| 363 | |
| 364 | if (nsent <= 0) { |
| 365 | /* something bad happened, hey ho */ |
| 366 | } else { |
| 367 | /* still don't care about oob */ |
| 368 | bufchain_consume(&s->output_data, nsent); |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | static int ot_tcp_write(Socket sock, char const *buf, int len) |
| 374 | { |
| 375 | Actual_Socket s = (Actual_Socket) sock; |
| 376 | |
| 377 | bufchain_add(&s->output_data, buf, len); |
| 378 | |
| 379 | if (s->writable) |
| 380 | try_send(s); |
| 381 | return bufchain_size(&s->output_data); |
| 382 | } |
| 383 | |
| 384 | static int ot_tcp_write_oob(Socket sock, char const *buf, int len) |
| 385 | { |
| 386 | /* Don't care about oob */ |
| 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | |
| 391 | /* |
| 392 | * Each socket abstraction contains a `void *' private field in |
| 393 | * which the client can keep state. |
| 394 | */ |
| 395 | static void ot_tcp_set_private_ptr(Socket sock, void *ptr) |
| 396 | { |
| 397 | Actual_Socket s = (Actual_Socket) sock; |
| 398 | s->private_ptr = ptr; |
| 399 | } |
| 400 | |
| 401 | static void *ot_tcp_get_private_ptr(Socket sock) |
| 402 | { |
| 403 | Actual_Socket s = (Actual_Socket) sock; |
| 404 | return s->private_ptr; |
| 405 | } |
| 406 | |
| 407 | |
| 408 | /* |
| 409 | * Special error values are returned from ot_namelookup and ot_new |
| 410 | * if there's a problem. These functions extract an error message, |
| 411 | * or return NULL if there's no problem. |
| 412 | */ |
| 413 | char *ot_addr_error(SockAddr addr) |
| 414 | { |
| 415 | static char buf[128]; |
| 416 | |
| 417 | if (addr->error == kOTNoError) |
| 418 | return NULL; |
| 419 | sprintf(buf, "error %d", addr->error); |
| 420 | return buf; |
| 421 | } |
| 422 | static char *ot_tcp_socket_error(Socket sock) |
| 423 | { |
| 424 | Actual_Socket s = (Actual_Socket) sock; |
| 425 | static char buf[128]; |
| 426 | |
| 427 | if (s->error == kOTNoError) |
| 428 | return NULL; |
| 429 | sprintf(buf, "error %d", s->error); |
| 430 | return buf; |
| 431 | } |
| 432 | |
| 433 | static void ot_tcp_set_frozen(Socket sock, int is_frozen) |
| 434 | { |
| 435 | Actual_Socket s = (Actual_Socket) sock; |
| 436 | |
| 437 | if (s->frozen == is_frozen) |
| 438 | return; |
| 439 | s->frozen = is_frozen; |
| 440 | } |
| 441 | |
| 442 | /* |
| 443 | * Poll all our sockets from an event loop |
| 444 | */ |
| 445 | |
| 446 | void ot_poll(void) |
| 447 | { |
| 448 | Actual_Socket s; |
| 449 | OTResult o; |
| 450 | |
| 451 | for (s = ot.socklist; s != NULL; s = s->next) { |
| 452 | o = OTLook(s->ep); |
| 453 | |
| 454 | switch(o) { |
| 455 | case T_DATA: /* Normal Data */ |
| 456 | ot_recv(s); |
| 457 | break; |
| 458 | case T_EXDATA: /* Expedited Data (urgent?) */ |
| 459 | ot_recv(s); |
| 460 | break; |
| 461 | } |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | void ot_recv(Actual_Socket s) |
| 466 | { |
| 467 | OTResult o; |
| 468 | char buf[20480]; |
| 469 | OTFlags flags; |
| 470 | |
| 471 | if (s->frozen) return; |
| 472 | |
| 473 | do { |
| 474 | o = OTRcv(s->ep, buf, sizeof(buf), &flags); |
| 475 | if (o > 0) |
| 476 | plug_receive(s->plug, 0, buf, o); |
| 477 | if (o < 0 && o != kOTNoDataErr) |
| 478 | plug_closing(s->plug, NULL, 0, 0); /* XXX Error msg */ |
| 479 | } while (o > 0); |
| 480 | } |
| 481 | |
| 482 | |
| 483 | /* |
| 484 | * Local Variables: |
| 485 | * c-file-style: "simon" |
| 486 | * End: |
| 487 | */ |